تحلیل انرژی، اگزرژی، اقتصادی و زیست‌محیطی (4E) سامانۀ بازیابی گرمای اتلافی موتور دیزل سنگین

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان

1 دانش آموخته کارشناسی ارشد، دانشکده مهندسی مکانیک، دانشگاه صنعتی نوشیروانی بابل، بابل، ایران.

2 استادیار، گروه مهندسی مکانیک، دانشگاه پیام نور، تهران، ایران.

3 دانشیار، دانشکده مهندسی مکانیک، دانشگاه صنعتی نوشیروانی بابل، بابل، ایران.

4 استادیار، گروه مهندسی مکانیک، دانشگاه فنی و حرفه‌ای، تهران، ایران.

10.48301/kssa.2023.382182.2421

چکیده

در این پژوهش، مشخصات انرژی، اگزرژی، اقتصادی و زیست­‌محیطی (4E) یک سامانۀ بازیابی گرمایی شامل یک چرخۀ دو حلقه‌­ای رنکین آلی (ORC) و یک موتور دیزل سنگین، به صورت عددی مورد تجزیه و تحلیل قرار گرفته است. سامانۀ پیشنهادی، حرارت اتلافی موجود در جریان گازهای خروجی، هوای ورودی، و مایع خنک­‌کنندۀ موتور را مورد بازیابی قرار داده است. تحلیل عملکرد پاسخ‌­های خروجی نسبت به متغیر­های مستقل مؤثر ورودی انجام شده است. متغیر­های ورودی مورد مطالعه عبارتند از: سرعت موتور، شروع پاشش، فشار بالایی حلقۀ دما بالا، و فشار بالایی حلقۀ دما پایین. نتایج نشان داد، افزایش مقدار متغیرهای موتوری منجر به افزایش چشمگیر دو متغیر توان تولیدی و نرخ تخریب اگزرژی سامانه می­‌شود و بالعکس. با افزایش فشار بالایی حلقه­‌ها، بهبود توان تولیدی در هر حلقه و در نتیجه کل سامانه مشاهده شد. با توجه به بیشتر بودن مقدار توان تولیدی حلقۀ دما پایین، حساسیت توان تولیدی سامانه نسبت به این حلقه بیشتر است. کمترین مقدار دورۀ بازگشت سرمایه، در بالاترین مقادیر متغیرهای موتوری مشاهده شده که برابر 57/5 سال است. بیشینۀ توان خروجی حاصل از سامانۀ بازیابی برابر 330 کیلووات بوده که این مقدار معادل 33% از توان خروجی موتور دیزل است. بالاترین مقدار اندازه‌گیری شده برای شاخص پایداری نیز برابر 28/3 است.

کلیدواژه‌ها

عنوان مقاله [English]

Energy, Exergy, Economic and Environmental (4E) Analysis of a Heavy-Duty Diesel Engine WHR System

نویسندگان [English]

  • Homayoun Boodaghi 1
  • Mir Majid Etghani 2
  • Kurosh Sedighi 3
  • Seyed Sharafoddin Hosseini 4
1 MSc, Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran.
2 Assistant Professor, Department of Mechanical Engineering, Payam Noor University, Tehran, Iran.
3 Associate Professor, Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran.
4 Assistant Professor, Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Iran.
چکیده [English]

In the present investigation, the energy, exergy, economic and environmental (4E) characteristics of a waste heat recovery (WHR) system including a dual-loop Organic Rankine Cycle (ORC) and a heavy-duty diesel was investigated. The proposed system recovers the available waste heat of the engine exhaust gas, intake air, and the coolant. Central composite design (CCD) which is a standard technique of response surface methodology (RSM) was employed for the design of experiments (DoE). Parametric study of the output responses to the effective input parameters was performed. The results showed that increasing the amount of the engine variables led to a significant increase in power production and exergy destruction rate of the system and vice versa. The minimum amount of payback period (5.57 years) was observed in the high values of the engine parameters. The maximum output power of the WHR system was 330 kW, which was equal to 33% of the diesel engine brake power. The maximum value for the sustainability index was also observed at approximately 3.28.

کلیدواژه‌ها [English]

  • Organic Rankine Cycle (ORC)
  • Waste Heat Recovery (WHR)
  • Internal Combustion Engine (ICE)
  • Response Surface Methodology (RSM)
  • Exergy Analysis

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فصلنامه علمی کارافن
دوره 20، شماره 3
فنی و مهندسی
آذر 1402
صفحه 81-105

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سابقه مقاله

  • تاریخ دریافت: 08 بهمن 1401
  • تاریخ بازنگری: 16 اردیبهشت 1402
  • تاریخ پذیرش: 21 خرداد 1402

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